/**
 * Copyright (C) 2002-2015   The FreeCol Team
 * <p>
 * This file is part of FreeCol.
 * <p>
 * FreeCol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * <p>
 * FreeCol is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.freecol.tools;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;

import net.sf.freecol.common.io.FreeColSavegameFile;

import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;


/**
 * Validate a saved game.
 */
public class SaveGameValidator
{

    public static void main( String[] args ) throws Exception
    {

        SchemaFactory factory = SchemaFactory.newInstance( "http://www.w3.org/2001/XMLSchema" );
        File schemaLocation = new File( "schema/data/data-savedGame.xsd" );
        Schema schema = factory.newSchema( schemaLocation );
        Validator saveGameValidator = schema.newValidator( );

        List< File > allFiles = new ArrayList<>( );
        FileFilter ff = FreeColSavegameFile.getFileFilter( );
        for ( String name : args )
        {
            File file = new File( name );
            if ( file.exists( ) )
            {
                if ( file.isDirectory( ) )
                {
                    for ( File fsg : file.listFiles( ff ) )
                    {
                        allFiles.add( fsg );
                    }
                }
                else if ( ff.accept( file ) )
                {
                    allFiles.add( file );
                }
            }
        }

        for ( File file : allFiles )
        {
            System.out.println( "Processing file " + file.getPath( ) );
            try
            {
                FreeColSavegameFile mapFile = new FreeColSavegameFile( file );
                saveGameValidator.validate( new StreamSource( mapFile.getSavegameInputStream( ) ) );
                System.out.println( "Successfully validated " + file.getName( ) );
            }
            catch ( SAXParseException e )
            {
                System.out.println( e.getMessage( )
                                            + " at line=" + e.getLineNumber( )
                                            + " column=" + e.getColumnNumber( ) );
            }
            catch ( IOException | SAXException e )
            {
                System.out.println( "Failed to read " + file.getName( ) );
            }
        }
    }

}

